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https://github.com/wolfpld/tracy.git
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76 lines
2.0 KiB
C++
76 lines
2.0 KiB
C++
#include <inttypes.h>
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#ifdef __EMSCRIPTEN__
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# include <emscripten/html5.h>
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# include <GLES2/gl2.h>
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#else
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# include "../profiler/src/imgui/imgui_impl_opengl3_loader.h"
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#endif
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#include "TracyTexture.hpp"
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#ifndef COMPRESSED_RGB_S3TC_DXT1_EXT
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# define COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0
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#endif
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namespace tracy
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{
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static bool s_hardwareS3tc;
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void InitTexture()
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{
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#ifdef __EMSCRIPTEN__
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s_hardwareS3tc = emscripten_webgl_enable_extension( emscripten_webgl_get_current_context(), "WEBGL_compressed_texture_s3tc" );
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#else
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s_hardwareS3tc = false;
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GLint num;
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glGetIntegerv( GL_NUM_EXTENSIONS, &num );
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for( GLint i=0; i<num; i++ )
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{
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auto ext = (const char*)glGetStringi( GL_EXTENSIONS, GLuint( i ) );
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if( strcmp( ext, "GL_EXT_texture_compression_s3tc" ) == 0 )
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{
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s_hardwareS3tc = true;
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break;
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}
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}
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#endif
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}
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void* MakeTexture()
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{
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GLuint tex;
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glGenTextures( 1, &tex );
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glBindTexture( GL_TEXTURE_2D, tex );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
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return (void*)(intptr_t)tex;
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}
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void FreeTexture( void* _tex, void(*runOnMainThread)(std::function<void()>, bool) )
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{
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auto tex = (GLuint)(intptr_t)_tex;
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runOnMainThread( [tex] { glDeleteTextures( 1, &tex ); }, false );
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}
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void UpdateTexture( void* _tex, const char* data, int w, int h )
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{
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auto tex = (GLuint)(intptr_t)_tex;
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glBindTexture( GL_TEXTURE_2D, tex );
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if( s_hardwareS3tc )
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{
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glCompressedTexImage2D( GL_TEXTURE_2D, 0, COMPRESSED_RGB_S3TC_DXT1_EXT, w, h, 0, w * h / 2, data );
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}
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}
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void UpdateTextureRGBA( void* _tex, void* data, int w, int h )
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{
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auto tex = (GLuint)(intptr_t)_tex;
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glBindTexture( GL_TEXTURE_2D, tex );
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glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, data );
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}
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}
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